Journal of Fuel Cell Science and Technology: Recent submissions
Now showing items 241-260 of 854
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A New Complex Design for Air-Breathing Polymer Electrolyte Membrane Fuel Cells Aided by Rapid Prototyping
(The American Society of Mechanical Engineers (ASME), 2011)One of the most difficult issues to fabricate a fuel cell with a complex design is the manufacturing method. To solve this difficulty, the authors applied an innovative method of fuel cell ... -
Hydrophilic ePTFE-Based Composite Membranes for PEMFCs
(The American Society of Mechanical Engineers (ASME), 2011)A hydrophilic expanded poly(tetrafluoroethylene) (ePTFE) based composite membrane was prepared and tested for proton exchange fuel cell applications. The composite membrane was prepared by impregnating ... -
A Numerical Model for Predicting Gas Diffusion Layer Failure in Proton Exchange Membrane Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2011)Gas diffusion layer (GDL) is one of the critical components in proton exchange membrane fuel cells (PEMFCs) and plays several important roles, such as structural support, reactants permeation, ... -
Multicomponent Proton Conducting Ceramics of SiO2–TiO2–ZrO2–P2O5–Bi2O3 for an Intermediate Temperature Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2011)The multicomponent proton conducting ceramics SiO2–TiO2–ZrO2–P2O5 (STZP) and SiO2–TiO2–ZrO2–P2O5–Bi2O3 with three different compositions (STZPBi3, STZPBi10, and STZPBi15) were synthesized via a wet ... -
The Ejector Performance of a 75 kW Molten Carbonate Fuel Cell System
(The American Society of Mechanical Engineers (ASME), 2011)An ejector is a machine for mixing and transporting fluid under vacuum. Ejectors enhance system efficiency, are easily operated, have a mechanically simple structure, and do not require a power ... -
Numerical Studies of Thermal Transport and Mechanical Effects Due to Thermal-Inertia Loading in PEMFC Stack in Subfreezing Environment
(The American Society of Mechanical Engineers (ASME), 2011)The thermal transport phenomena and mechanical effects due to thermal-inertia loading during start-up/shut-down operations in a 3D proton exchange membrane fuel cell (PEMFC) stack in a subfreezing ... -
Novel Approaches for the Integration of High Temperature PEM Fuel Cells Into Aircrafts
(The American Society of Mechanical Engineers (ASME), 2011)Reduced greenhouse gas emissions via improved energy efficiency represent the ultimate challenge for the energy economy of the future. In this context, fuel cells for power generation aboard ... -
Interfacial Water Transport Effects in Proton-Exchange Membranes
(The American Society of Mechanical Engineers (ASME), 2011)It is well known that the proton-exchange membrane is perhaps the most critical component of a polymer-electrolyte fuel cell. Typical membranes, such as Nafion® , require hydration to conduct ... -
Performance of a Direct Methanol Fuel Cell Operating Close to Room Temperature
(The American Society of Mechanical Engineers (ASME), 2011)The direct methanol fuel cell (DMFC) is a promising power source for micro- and various portable electronic devices (mobile phones, PDAs, laptops, and multimedia equipment) with the advantages ... -
Bifunctionally Graded Electrode Supported SOFC Modeling and Computational Thermal Fluid Analysis for Experimental Design
(The American Society of Mechanical Engineers (ASME), 2011)A comprehensive 3D computational fluid dynamics (CFD) model is developed for a bi-electrode supported cell (BSC) solid oxide fuel cell (SOFC). The model includes complicated transport phenomena ... -
Sintering Mechanisms of Cobalt-Doped Ceria and Zirconia Electrolytes in Intermediate-Temperature Solid Oxide Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2011)Ce0.9Gd0.1O1.95 (CGO) and (ZrO2)0.89(Sc2O3)0.1(CeO2)0.01 (ScSZ) have been proposed as possible alternative electrolytes in intermediate-temperature solid oxide fuel cells (SOFCs). In this study, the ... -
Anode Fuel and Steam Recycling for Internal Methane Reforming SOFCs: Analysis of Carbon Deposition
(The American Society of Mechanical Engineers (ASME), 2011)Anode fuel and steam recycling are explored as possible mitigation strategies against carbon deposition in an internal methane reforming solid oxide fuel cell (IR-SOFC) operated at steam-to-carbon ... -
Performance of Microtubular SOFCs Using Ethanol Fuel
(The American Society of Mechanical Engineers (ASME), 2011)Microtubular solid oxide fuel cells (SOFCs) are considered to be ideal for application such as auxiliary power units due to their high thermal shock resistance and their compactness (high ... -
A Controllable Membrane-Type Humidifier for Fuel Cell Applications—Part II: Controller Design, Analysis and Implementation
(The American Society of Mechanical Engineers (ASME), 2011)A membrane-based gas humidification apparatus was employed to actively manage the amount of water vapor entrained in the reactant gas supplied to a fuel cell stack. The humidification system ... -
Graduated Resistance to Gas Flow Through a GDL in an Unconventional PEM Stack
(The American Society of Mechanical Engineers (ASME), 2011)The goal of this study is to design a gas diffusion layer (GDL) for a polymer electrolyte membrane (PEM) fuel cell with a graduated permeability and thereby graduating the resistance to flow ... -
Solid Oxide Fuel Cell Performance With Cross-Flow Roughness
(The American Society of Mechanical Engineers (ASME), 2011)To increase power per unit volume in solid oxide fuel cells (SOFCs), the mono-block-layer-built SOFC used an innovative shape to increase active surface area. The objective of this study is ... -
MGT/HTFC Hybrid System Emulator Test Rig: Experimental Investigation on the Anodic Recirculation System
(The American Society of Mechanical Engineers (ASME), 2011)The Thermochemical Power Group (TPG) of the University of Genoa designed and installed a complete hybrid system emulator test rig equipped with a 100 kW recuperated micro gas turbine, a modular ... -
Water Management in a Passive DMFC Using Highly Concentrated Methanol Solution
(The American Society of Mechanical Engineers (ASME), 2011)A two-dimensional, steady state, nonisothermal, nonequilibrium, multifluid, two-phase flow model is employed to investigate fuel delivery characteristics, as well as the strong relation between water ... -
Methanol-Tolerant Oxygen Reduction Reaction at Pt–Pd/C Alloy Nanocatalysts
(The American Society of Mechanical Engineers (ASME), 2011)Carbon-supported platinum and Pt–Pd alloy electrocatalysts with different Pt/Pd atomic ratios were synthesized by a microemulsion method at room temperature (metal loading is 10 wt %). The Pt–Pd/C ... -
A New High Voltage Impedance Spectrometer for the Diagnostics of Fuel Cell Stacks
(The American Society of Mechanical Engineers (ASME), 2011)This paper presents a novel architecture of an impedance spectrometer dedicated to the characterization and diagnostics of large fuel cell stacks operated in galvanostatic mode. The validation ...